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US Patent: D53,641
Spark Plug Tool
Design for a Spark-Plug Tool
William E. Rosel - Columbus, OH

USPTO Classifications:
D8/28, D8/29

Tool Categories:
combination tools
wrenches : automotive specialty wrenches


Wm. E. Rosel & Co. - Columbus, OH

none listed

Patent Dates:
Applied: Apr. 10, 1919
Granted: Jul. 22, 1919

Patent Pictures:
William E. Rosel design patent July 22, 1919 & example
USPTO pdf tiff
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This socket wrench was marketed as the ROSEL 5-IN-1 tool. The five functions listed in one period auto repair catalog (all in relation to the Model T Ford): 2 hex sizes fit spark plugs & several other adjustments; flat on handle end is ignition gap gauge & screwdriver; alligator slot fits ignition wiring nuts & nut fastening spark plug wire to spark plug.

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